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Ryobi RY905500 Spec Review

The Ryobi RY905500 is a portable open frame generator with a rated wattage of 5500 W and a starting wattage of 6875 W.

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Description

The Ryobi 5,500-Watt Portable Generator with EasyStart technology is where efficiency meets convenience. With a Heavy Duty 420cc OHV engine, this generator delivers 5,500 Running-Watts (6,875 Surge/Starting-Watts) and is powerful enough to be used on a jobsite or as an emergency backup system. Featuring the EasyStart 3-Step starting system and a large 6 Gal. fuel tank, the Ryobi 5,500-Watt Generator can run up to 9 hours at 50% load. The Digital Hour Meter Display allows you to monitor essential functions such as Time of Use, Voltage, Hertz and Total Hours used. The Quick-Release handle provides easy and compact storage while the flat-free wheels and the Hand Truck Frame design allow for easy transport, even over rough terrain. This generator is also equipped with an Automatic Voltage Regulator that provides consistent power. The Control Panel features (4) 120-Volt 20 Amp (GFCI Protected) outlets and (1) 240-Volt Twist Lock 30 Amp outlet to meet all your power needs. (source: Ryobi (opens in a new tab))

Zoom on the Ryobi RY905500

In a nutshell, the Ryobi RY905500 is a portable generator mostly geared towards:

  • RV travellers looking for even more independence
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
  • Homeowners in need of an emergency backup power for their essentials
  • Professionals who want to ensure that a power failure will not prevent them from working

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Ryobi RY905500 in use

The Ryobi RY905500

The Ryobi RY905500's design includes a gasoline-fueled 420 cc Ryobi OHV 4-stroke engine. With a 120/240V output, it gives a running wattage of 5500W and also a peak wattage of 6875W.

At a noise rating of 78 dBA (less noisy than a dishwasher), the generator is started via Ryobi's EasyStart pull-start mechanism (more information below).

With a full tank, the RY905500 can operate for around 10 hours at 50% load (fuel consumption around 0.6 GPH), thanks to its fuel capacity of 6 gallons.

The powering of sensitive electronic devices with the RY905500 is not recommended due to its relatively high THD (<20%).

Outlets

The control panel features the upcoming 5 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120/240V 30A (L14-30R) receptacle

Due to the featured twist-lock L14-30R receptacle, the RY905500 is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.

Portability

The Ryobi RY905500 has a conventional, open frame design, of the following dimensions: L31.5 x W29 x H24 in, which offers support and allows it to be raised above ground level. The generator is designed for ideal use outdoors and in rough environments.

As the generator's weight is 192 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, its challenging mobility is solved by its wheel kit and its folding handle, which will ease its displacement, once it is on the floor.

EasyStart Mechanism

ryobi easystart starting mechanism

Ryobi's 3-step EasyStart mechanism

The unit benefits from Ryobi’s EasyStart mechanism. This 3-step starting system allows you to easily start your generator. It works in the following way:

  1. Put the engine switch on the “ON” position, and place the lever on the “START” position
  2. Pull the recoil until the engine runs
  3. Let the engine run 15 to 30 seconds and place the lever on the “RUN” position

Features

Panel of the Ryobi RY905500

The RY905500's control panel

The RY905500 and its control panel include a convenient meter showing you voltage, frequency and lifetime hours. This feature comes handy when monitoring its status and activity.

As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off, letting you use it with a peace of mind.

Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Ryobi RY905500's package also includes these accessories: tool kit and oil.

Emissions

The Ryobi RY905500 is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor, so it is adequate for use in forested areas.

Product Video

The Ryobi RY905500 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Ryobi RY905500 compare to generators of similar power (between 5000 and 6000 W).

  • Having a dry weight of 192 lbs, the Ryobi RY905500 belongs in the expected weight range for generators which produce 5000 to 6000 rated watts. If weight matters to you, one of the champions in this power range is the WEN GN6000 with only 119 pounds.
  • Among the generators of a comparable running wattage, this generator with a lowest noise of 78 dBA can be judged as noisy. If you are concerned with noise, check out the Honda EU7000iS, which is one of the least noisy generators in its power range, with a noise rating of just 52 dBA.
  • Autonomy-wise, with around 10 hours on a full tank at a 50% load, the RY905500 is on the low end when compared to other generators of a similar power output. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Cat RP5500, reaching around 15 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. As this generator uses an estimated 0.6 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.35 GPH, the Westinghouse WGen5300v is a device you should look out for.

Price comparison

As you can see from this interactive chart, when compared to other 5000-6000W generators, the Ryobi RY905500 is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • Several accessories included
  • GFCI Outlets
AVERAGE SPECS:
  • Decent weight (192 lbs)
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • Not CARB-compliant
  • On the noisy side (78 dBA)
  • Relatively low run time

Do you own the Ryobi RY905500 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine420 cc Ryobi OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120/240V 60 Hz
Running watts5500 W
Starting watts6875 W
Running amps (@120/240V)45.8/22.9 amps
Peaks amps (@120/240V)57.3/28.6 amps
Run time @50% load10 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120/240V 30A (L14-30R)
DC outletsNo
Data centerVFT
IndicatorsNo
Fuel tank6 gal
Fuel gaugeNo
Misc
Weight192 lbs
Approx. dimensions (L x W x H)31.5 x 29 x 24 in
Noise (lower limit)78 dBA
THD< 20%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil, tool kit, and wheel kit
Warranty3 years

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About Ryobi

Founded in 1943, Ryobi Limited is a Japanese based manufacturer that throughout its history mainly focused on electrical and automotive components. However, their quite recent power tool branch has proven to be popular for the quality and reliability of its products, which are nowadays found globally on the shelves of most retailers. Ryobi products are listed to be produced in various locations globally, mainly US, Germany, Japan and China.

Warranty Information

The Ryobi RY905500 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Ryobi generators, please consult Ryobi's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-860-4050.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizer.
ItemRunning WattsStarting Watts
At homeDish washer15003000
Electric fry pan15001500
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Radio100100
Set of 5 LED light bulbs5555
Total4397 W5897 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Radiant heater13001300
Radio100100
Total4390 W4980 W
For workTable saw18004500
Grinder14002500
Reciprocating saw730960
Bug zapper8080
Total4010 W6710 W
Is there a conversion kit to electric start? (Asked October 15, 2019)

As far as we know, there are no official conversion kits that serve that purpose.

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